https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121149
--- Comment #9 from David Faust <david.faust at oracle dot com> --- In both --target=bpf-unknown-none and --target=bpf build dirs, I see: $ rg "checking target system type" -A1 ... config.log 47:configure:2502: checking target system type 48-configure:2515: result: bpf-unknown-none zlib/config.log 48:configure:2388: checking target system type 49-configure:2401: result: bpf-unknown-none build-x86_64-pc-linux-gnu/fixincludes/config.log 48:configure:3272: checking target system type 49-configure:3285: result: bpf-unknown-none gcc/config.log 48:configure:3507: checking target system type 49-configure:3520: result: bpf-unknown-none ... Likewise in every subdir except for libgcc. I wonder if that is intended?